Each journal is assigned to one of 22 research
fields. In ESI, a journal can be assigned to only one field. Journals such
as Science and Nature are categorized as multidisciplinary
since they publish research in many different fields. As a result, papers
published in these multidisciplinary journals are assigned to a field based on
the representation of the cited journals. For example, if the majority of cited
references in the paper are to neuroscience journals, the paper is then
categorized as neuroscience.

Journal List

The master journal list (application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 782.5 kB, info), which comprises all
active journal titles eligible for inclusion in Essential Science Indicators,
has been updated as of January 18, 2019, to cover a 10-year plus 10-month
period, January 1, 2008 – October 31, 2018. Data is updated bi-monthly (six
times a year). This is the fifth bi-monthly period of 2018.

This master journal list will be updated regularly. The current extraction
date is December 1, 2018.